. >>> and why they're telling students to be on alert and first lady michelle obama >>> out west, helicopters with heat-sensing technology scouring big bear today, looking for the man suspected in the deadly rampage in southern california. for a third day, hundreds of law enforcement officers searched the area for christopher dorner. his pickup was found burned in the ski town on thursday. police believe he killed three people at anger as thought he said ended his career. >>> first lady michelle obama among hundreds of mourners for the funeral of a 15-year-old girl. the first lady met friday with the family before the service. pendleton was shot in late january, just a few days after performing at events surrounding the president's inauguration. police say she was an innocent victim in a gang-related shooting. >> you know don't know hard this really is, and those of you who do know how hard this is, i'm sorry. i'm sorry. no mother, no father should ever have to experience this. >> chicago mayor rahm emanuel and illinois governor pat quinn were also at today's service. >>> still to come tonigh